Includes collapsible pouches that are made from durable Mylar foil (100% BPA FREE), can be rolled tightly for easy packing, and can be reused hundreds of times. The Squeeze System has a removable push/pull cap built right in, so you can spray water straight into your mouth or use it to fill a water bottle; fills most water bottles in 30 seconds. The PointONE filter removes 99.99999% of all bacteria, such as salmonella, cholera and E.coli; removes 99.9999% of all protozoa, such as giardia and cryptosporidium. We've included syringe to backflush the filter for an ability to maintain the filter in the field as well as to promote a high-flow rate.